Generally, education waivers are easy to acquire.

Select an empirical fact about labor and capital mobility impacts on a country’s gross domestic product:

a. Countries open to trade can expect a higher return on labor investment when compared to countries less open to trade. b. Countries open to trade can expect a lower return on labor investment when compared to countries less open to trade. c. Countries less open to trade can expect a higher return on labor investment when compared to countries open to trade. d. There is no empirical relationship between labor and capital mobility and gdp.

The careful preparation of settings is

A) used only in between-participants designs. B) a general control procedure. C) a control for experimenter effects. D) a control for construct validity.